Home / 78,069,122.64-107,700,061.32-47,119,398.48

Finding the Fourth Proportional to 78,069,122.64, 107,700,061.32 and 47,119,398.48

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Solution

The fourth proportional to 78,069,122.64, 107,700,061.32 and 47,119,398.48 is: 65,003,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,069,122.64 : 107,700,061.32 = 47,119,398.48 : x
  2. Step 2: Convert to fraction form
    78,069,122.64/107,700,061.32 = 47,119,398.48/x
  3. Step 3: Cross multiply
    78,069,122.64x = 107,700,061.32 × 47,119,398.48
  4. Step 4: Simplify right side
    78,069,122.64x = 5,074,762,105,657,514
  5. Step 5: Solve for x
    x = 5,074,762,105,657,514/78,069,122.64
  6. Step 6: Final answer
    x = 65,003,447.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.